Since 1990, D. M. Eigler and E. K. Schweizer manipulated the xenon atoms on the
Ni(110) surface to pattern the atomic scale structure. The researches about
manipulation of atoms/ molecules become a major research in surface science. One of
the ultimate goals of nanotechnology is manipulating or modifying the nanoclusters.
In our experiment, first, deposit metal atoms on the Al2O3/NiAl(100) surface. These Co
atoms will form a cluster structure because of the surface free energy. Second, use the
STM manipulation technique to manipulate the clusters, and observe the differences
by STM images. Closer the tip to Co clusters by reducing the bias voltage of STM. This
action will induce a force to overcome the interaction between Co clusters and Al2O3
to remove the Co clusters. In the analysis of electronic spectroscopy, we can say that
some of the clusters are not the Co clusters, those are formed by oxygen atom or other
molecules by the difference of electronic spectroscopy curves. And we observe that the
relation between Co cluster size and tunneling current gap is a linear relation. In the
analysis of electronic spectroscopy, we can distinguish the cluster from the oxide
surface by the difference of electronic spectroscopy curves. And we observe that the
metal cluster size will be influenced the width of tunneling gap.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0913106-150709 |
| Date | 13 September 2006 |
| Creators | Lin, Ku-liang |
| Contributors | none, Chien-cheng Kuo, Meng-fan Luo |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0913106-150709 |
| Rights | withheld, Copyright information available at source archive |
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